Lateral take up device for shuttles



Oct. 4, 1932. W 1,881,066

LATERAL TAKE-UP DEVICE FOR SHUTTLES Filed Feb. 5, 1931 INVENTOR.

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Patented Oct. 4, 1932' 'LE'F'ED PATENT OFFICE ISAAC SNOWQ OF LAWRENCE, MASSACHUSETTS, ASSIGNOB. TO U. 'S. BOBBIN 8c SHUTTLE COMPANY 1929, GE PROVIDENCE, RHODE ISLAND, A CORPORATION OF RHODE ISLAND v LATERAL TAKE UP nsvrcn FOR SHUTTLES Application filed February 5, 1931. Serial No. 513,636.

This invention relates to what is known in the trade as a take up device for shuttlesl In shuttles especially what areknown as the automatic type where there'is a threading chamber fromwhich a diagonal slot runs to an eye in the side, in order to prevent the thread on the bobbin from being thrown off and also in order to keep out kinks and to keep the filling thread straight in the cloth, there is usually a tension device of some sort in the shuttle in front of the tip of. the

bobbin.

, However, as the shuttle sometimes rebounds and there are certain places when the thread between thetension device and the cloth becomes slack, some sort of device for taking up the slack is desirable.

. I am aware that thereare various more or less complicated devices intended for this purpose and I am aware that there are devices in which there is an arm pivoted on a lateralpivot .to swing either to the right and leftor up and down, such devices having usually a pluralityof arms which co-operate with a plurality of fixed guides, the idea being tobend the thread into several bends thus taking up the slack.

Anobfection to a take ,up device or take up arm so pivoted near the bobbintip and extending forward is the unequal pressure or force of the spring and of the thread on the back and front pins or fingers and the danger that the thread will become entangled in 1 some of the many fingers and guides. In place of such devices, I pivot a sprlng pressed single arm on the side opposite the shuttl eye, preferably in the shuttle-block,

in such position that it will normally extend almost horizontally across the threading "chamber near the top but can be pulled down to near: the bottom thereof when the thread is ordinarily running out. When theshuttle stops, however, the-force of the spring arm is suificientto take up the slack. Such an armJca-n swing laterallyon a longitudinal pivot. 1 V r In the drawing, Fig. 1 is a plan view of a shuttlewith the preferred type of take up in position. s r I r Fig. 2 is a vertical section on linev 2 2 of Fig. 1 looking up in the direction of the arrow.

Fig. 3 1s a vertical cross section taken on the line 33 of Fig. 1 looking toward the left I in the direction of enlarged.

Fig. 1 is a vertical section on the line 44 of Fig. 1 looking toward the right in the direction of the arrow.

Fig. 5 is a vertical section similar to Fig. 2 with some parts shown in full lines for clearness, of a modification of the construction shown in Fig. 1.

the arrow and somewhat Fig. 6 is a vertical section of the wooden F 10 is a vertical section on line 10-10 V of Fig. 1 as viewed from the right in the direction of the arrow.

Fig. 11 is a plan view with parts broken away showing another type of shuttle.

In the drawing, S represents a shuttle havfing a bobbin chamber 10, threading chamber 11, an eye slot 12 and an eye 13 of any well known type, and a block recess 9 for a metal shuttle block B. This block B has a longitudinal thread passage 1 formed by a wall 2 on the side of the eye and on the opposite side by wall 8 of recess 9 and extending up and down in a recess 3 in the wood by a vertical projection 4. In projection 4 is aspring hole 5 threaded at 6 for an adjusting screw 7 for an adjusting spring 68.

Take up arm'A is pivoted at 69 to the top of projection dby means of a suitable pivot pin 67' and extends at 60 in a substantially I straight direction but is bent up at 61 at the free end or tip.

At 60 and also at .61 this arm should be very smooth and preferably of hard metal which will not be cut by the thread as it runs out.

r G represents a guide plate which,as shown, is part of the block B, such plate extend ng V of a well. known type, but having near the bottom a lateral eyepassage, 24. I willcall this lateral passage the-lateral eye passage. The front edge of guide plate G forms ing indicated by 12 V v 26 represents a thread guide pin which, as

der plate G. This thread guide pin issubs'tantially, horizontal and is: proximate the eye side of th'ezthreading chamber lit-and may extend diagonally across the eye passage 2%, its position'being-such that thread I from abobbinsuch as H will run free except as herein described and bend at right f angles arounda vertical thread pin 27 ofthe usualtypeand thence under pin 26 andout the eye 13.- Frepresents a lateral guide fin which ex- 1 tends from under guide plate G at 50 in a {slanting curve at 51 down-to a hook 52 behind which is. a fin passage 53 thetop edge of which is substantially in line with the-top edge-of the eye passage 24. v v r. e v The parts areso arranged that if the thread F runs off from bobbin H on the first pick it will run over the part 60 of arm A and will then during subsequent picks be threaded through the eye-13 and run around'the' pin 26andthrough eye passage 24:. The pull of v the thread depresses the free end'6l of arm A and the threadslips down aroundhook 52 and; guide pin 24 into passage 53. When the huttle isinmotio'n, the thread runs 'nearly straight holding down the end 61 of arm A, but; when there is slack and the 7 force ofthe spring on the take up arm is sulfi- Y slack.

cient, its curved end 61 is lifted and makes a fsingle rbend in the yarn between the passage 24:: andthe passage 53'thus taking-up the I such as Glocated behind blo'ck B.

-'I he 0ne shown includes arecess from whiohldownwardly extends afplate84 carry-e ing with itfa pieceof felt 82 in contact with another piece; of felt 81' held in place by a -metal support '85 the parts vbeing'in such p0;=

sition that' if the thread T unwinds from the bobbin, it naturally slips into mouth 83 and is held with more or less force; 7

In Fig. ,4, I show a modification'of the guide fin which instead of extending out from slopeof the arm A when depressed,- to a hook the side opposite the'eyeextends down asK from the eye side. It starts at 7 0 and slopes down atY71 in a direction which'crosses the 72 havingbehind it fin passage 73 which corresponds with passage53. r

of projection and then extends up at 93 and is curved around at 94 under a head 91 thence out at 95'and bent up at 96 the whole being somade that, as shown by the dotted lines, when it is pulled down as by the thread I can .use a guide fin extending from one side over and down towards the other starting at either side, as shown at F and K.

Where the fin starts from the side opposite I T,-itwillslip under the hook 72'o f-a guide I the back smear the eye slot,'the other 'sidebe- 'fi the eye,- such as F, the threadis more easily directeddown as both the arm and the guide slopein the same direction and especially if the thread is unwinding in a direction which helps. i f J However, this very unwinding may have a slight tendency to cause thethread to slip out of the fin thread passagealthough this is unimportant because it will'get back in again at the next pick.-

...The drag of the friction. device such as O and the strength ofthe spring'pressedlater ally pivoted arm should be so. adjusted that the drag of the friction and the pull of'the thread through the shuttle eyewill be'sufficient to holddown the takeup arm while the shuttle is moving, but when the shuttle-has stopped and the drag from the friction C ceases, the strength of the spring of the lateral take up arm should be enough to pull back the slack through the shuttle eye. 1W hile I have described my take up device orlateral take up member as particularly applicable' to an automatic or self-threading shuttle, as shown in Fig. 1, it can equally well be applied to the old fashioned suction eye type shown in Fig. 1-1.- d V '30 shows such a shuttle with a threading chamber31 which is also part of the bobbin chamber in which there is a bobbin from which the thread such asj36 unwinds and an eye 32 which goes out the side of the shuttle Extending from the side opposite the eye .over and down Ishowa thread guide fin 35 V The thread 36afterthreading runs under I fin 35theloweredge of which issubstantially level with the passage in eye 32 while the free end 'of the arm 33 isheld down as the thread runs out ordinarily, but when the shuttle stops, arm 33 lifts and bends the thread-between the fin passage in the fin 35 and eye passage in eye 32.

' The hook such as 72formed at the an a a fin thread passagesuch as 73'at the bottom of a guide fin such as K, or even thesloping hold part of it down when this member A acts as a take up of the slack.

I claim: 1. The combination in a shuttle for automatic looms having a bobbin chamber from which a threading chamber extends forward and an eye slot which extends diagonally back from the threading chamber tc'an eye in the side of the shuttle; of a thread direct-' ing guide plate which extends from the top of the 'shuttleon the eye side over and down hind its bottom end a lateral eye passage;

7 a thread guide pinproximate said thread passage behind the horn on the side away from the shuttle eye a lateral guide fin the top edge of which slopes from near the top of the shuttle down towards the eye side and has at the bottom a fin thread passage; and a take up member pivoted to the shuttle between the lateral eye passage and the fin thread passage on that side of the threading chamber which is opposite the eye, said take up member including an arm of such size and in such position that its free end which curves upward can swing down laterally of the shuttle proximate a line passage through the top of the lateral eye passage and the top eye passage and the top of the fin passage; and spring means to keep said arm normally raised.

3. The combination in a shuttle for looms having a threading chamber, a lateral eye passage from the threading chamber to an eye in the side of the shuttle; of a lateral guide fin which slopes down from near the top of the shuttle and has at the bottom a fin thread passage; and a take up member pivoted to the shuttle between the lateral eye passage and the fin thread passage on that side of the threading chamber which is opposite the eye, said take up member including an arm of such size and in such position that its free end which curves upward can swing down laterally of the shuttle proximate a line between the top of the lateral eye passage and the top of the fin thread passage; and spring means to keep said arm normally raised.

4. The combination in a shuttle for looms having a threading chamber and an eye in the side of the shuttle; of a lateral guide fin which has at the bottom a thread fin passage;

v and a take up member pivoted to the shuttle between the eye and the fin thread passage on that side of the threading chamber which is opposite the eye, said take up member including an arm which can swing down laterally of the shuttle in a plane which rises substantially between the shuttle eye and the guide fin; and spring means to keep said arm normally raised.

ISAAC SNOW.

of the fin thread passage and spring means to keep the arm normally raised.

2. The combination in a shuttle for looms having a bobbin'chamber from which a threadlng chamber extends forward and an eye slot which extends diagonally back from the threading chamber to an eye in the side of the shuttle; of athread directing guide plate which extends from the top of the shuttle, on the eye side over and down into the V threading chamber and which terminates at the front in a nose from whicha horn slopes down and back, said horn having behind its bottom end a lateral eye passage; a lateral guide fin the top edge of which slopes down from near the top of the shuttle and has at the bottom a fin thread passage; and a take up 7 member pivoted to the shuttle between the lateral eye passage and the fin thread passage on that side of the threading chamber which is opposite the eye, said take up member in- 

